my 4wk old kush plant smells like lemons

hey everybody, this is my second grow, the first didnt make it to see frowering, but i have noticed a bigg difference in the my second grow around. i have a 4wk old kush plant that i have started from bag seeds, and she or he is smelling oh so good, but the porblem is it smells more like lemons than weed, but the weed stench is there. my question is, is this normal?? is the smell how i identify what type of kush it is?? please help a fello grower/toker... thanks in advance:smokin: